Motor lubricating device



May 19, 1931. R. E, LANGMACK MOTOR LUBRICATING DEVICE Filed Jan. 14. 1929 I II 5. 29 of Awzq z ATTORN EY Patented May 19, 1931 BOY E. LANGMIACK, 0F MINNEAPOLIS, MINNESOTA MOTOR LU'BRICATING DEVICE Application filed January 14,1929. Serial No. 332,377.

This invention relates to lubricating de vices for internal combustion engines, and the main object is to provide means of a novel, efficient, and practical nature for feeding lubricants under pressure to the upper portion of each piston of the engine, which piston portion usually contacts with the cylinder wall in a relatively dry state, because of the fact that the piston rings prevent the splash fed oil from reaching this area of contact between the piston and the cylinder in which it operates. More specifically the invention relates to improved means for conducting the lubricants from the source of supply to the individual cylindersof the engine, and to this end the invention supplements, or be considered as a specific improvement in the lubricating system illustrat ed and described in my Patent No, 1,693,788,

issued December 4, 1.928, for lubricating mechanism.

In the accompanying drawings Fig. 1 is a side elevation of the conventional type of gasoline engine in which my improved lubricating system has been installed.

Fig. 2 is an enlarged sectional plan view as seen substantially on the line 2-2 in Fig. 1.

Fig. 3 is an enlarged-detail sectional elevation on the line 3-3 in Fig. 1.

Fig. 4 is an enlarged detail View of a portion of the oil line, and showing the method of supporting it by a bracket which forms a art of the present invention.

Fig. 5 is a detall slde elevation as seen on line 5-5 in Fig. 1.

Fig. 6 is a detail sectional view on the line 66 in Fig. 4.

Referring to the drawings more particularly, and by reference characters, A designates an internal combustion engine having a series of cylinders B, in which reciprocate pistons C connected to the usual crank shaft D by piston rods E, all of common and well known construction.

As explained in my above noted patent, the usual method of lubricating the contacting areas of the pistons and cylinders is to provide the crank case with a body of oil which is thrown by the cranks of the shaft B up into the cylinders, and to prevent oil from seeping up past the pistons, which would result in fouling of the spark plugs, poor compression, and faulty ignition, it is also customary and necessary to provide the pistons with rings, such as F, and as to this construction I make no changes, in view of the universal acceptance and use thereof in practically all motor cars. But notwithstanding the popularity and efficiency of this type of engine, it does have the serious objections above noted, and in order to eliminate these defects, as noted in my earlier patent, I provided a force feed method of lubricating the aforesaid dryarca, and that'method is fully set forth in said patent.

Substantially the only difliculties experienced in making and installing the device shown in my earlier patent was in properly connecting up the oil supply pipes with the cylinders, and the present invention is primarily concerned with means for overcoming those difficulties. Referring to Fig. 1 of the drawings it will be seen that the lubricating oil is forced up through a vertical pipe section 7 from a pump, shown in dotted lines, and indicated by the numeral 8. Communicating with the upper end of the pipe 7 is a horizontally disposed pipe 9 that extends laterally along one side of the engine, and it is from this pipe that the lubricant must be injected into the respective cylinders. A small hole 10 is drilled into each cylinder in the side adjacent to the pipe 9, and at a height where it will communicate with the upper end of the piston when the latter is in its lowermost po sition. lnto each of the holes 10 extends a small tubular nipple 11, with which is integrally formed a semi-cylindrical head 13 which receives the pipe 9, and said head is provided with a short perforated projection or small lug 12, which is in effect a continuation of the nipple 11. The nipple 11 is, preferably driven into position in the hole 10, or at least has a sufficiently tight fit so as to seal the nipple into the cylinder housing. The pipe 9 is secured in place against the head 13 by a cap member 14, having vertically opposed grooved flanges 15 which slidably receive projecting flanges 16 of the head 13. 7 Each cap member 14 is further provided with a set screw 17, which, when tightened against the pipe 9 rigidly secures the three members 9, 13, and 14 together.

The pipe 9 is further secured by being mounted on brackets 18, the lower ends of which are rigidly secured to some convenient part of the motor, such as the ledge 20, by bolts 21. The upper ends of the brackets 18 are provided with vertical slots 22 in which are secured bolts 23, which carry supporting hooks 24. The hook members 2 1 engage over the pipe 5), and thereby rigidly secure the same with respect to the bracket 18. It will be noted, however, with particular reference to Fig. 5, that the pipe 9 is slightly spaced from the bracket arm 18 with a result that the hook members 24, when securely fastened, tend to continually urge the pipe 9 towards the engine, and consequently there will always be a pressure tending to hold the nipples 11 in place.

It will now be seen that as the lubricating oil is pumped up through the pipe 7, and into the horizontal pipe 9, it will be injected into the respective cylinders through the respective nipples 11. It will also be noted that this construction is extremely simple, and entirely eliminates the necessity for cutting threaos in any of these conduit connections. It will also be seen that should any of the nipples become clogged, or should the apparatus for any other reason require dismantling, for cleaning or repair purposes, it is only necessary to loosen such screws 17, remove the caps 14- by sliding them lonigtudinally of the ribs 16, and then to release the hooks 24, at which time the pipe section 9 can be slung to one side and the various parts cleaned.

When installing this device I find it convenient to first drill the holes 10 in the cylinders, and then insert the members 1113. If there is any diiiiculty in getting the nipples into place I apply a small block to th head 13, and which block is formen to conform to the shape of the head, and then li ly tap the block to drive the members 11 3 into place. The pipe 9 is now temporarily held into place against the lugs 12, so that the proper spacing can be marked upon one pipe for drilling. After the holes have been drilled into the pipe 9 it is held in place against the head 13 until the cap members 1 1, and the hook members 24 have been secured.

It is understood that suitable moditi cations maybe made in the general design and structural details of the invention, as herein disclosed, provided, however, that such modifications come within the spirit and scope of the appended claims.

Having now, therefore, fully shown and described my invention, which I claim to be new, and desire to protect by Letters Patent is:

1. A device for connecting a lubricant pressure pipe to the cylinder of an internal combustion engine, comprising a tubular nipple secured in the cylinder and having an accurate head to receive the pipe, a cap member releasably secured to and complementing the head member to retain the pipe, brackets mounted on the engine, to support the pipe and for urging the same toward the cylinder to insure retention of the nipple therein.

2. A device for connecting a lubricant pressure pipe to the cylinders of an internal combustion engine, comprising spaced coupler nipples carried by the pipe and engageable in holes in the respective cylinder walls to provide communication between the pipe and cylinders, bracket arms secured to the engine for supporting the pipe, and means carried by the bracket arms for press ing the pipe toward the cylinders so as to retain the coupler nipples in place under such pressure.

Signed this 11th day of January, 1929, at Minneapolis, Minnesota.

ROY E. LANG'MACK. 

